TaxNo: 2609Eumorphoceras rostratum
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Eumorphoceras
|
| Species: | rostratum |
| Qualifier: | ss |
| Author: |
Yates 1962,p.387
|
| Lower Boundary: |
GBY E2b2--E2b3 (holmesi--Cr.nititoides), 321.5 million years
|
| Upper Boundary: |
GBY E2b3--E2c1 C.nititoides--N.stellar.), 321 million years
|